Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 285 · 40 questions

What you do (Air pushes): 1. Fill a plastic glass right to the top with water. 2. Lay the postcard flat on top, covering the rim. 3. Over a sink or bucket, hold the card and turn the glass upside down. 4. Slowly take your hand away from the card and watch.

1. 1.True or false: a bicycle pump works by air pressure. (a) False (b) True
2. 2.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the card stays on (d) the glass breaks
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a glass of water (d) a stiff postcard
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a mirror
6. 6.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same glass (b) whether the card stays (c) how full the glass is
8. 8.True or false: a compass needle works by air pressure. (a) True (b) False
9. 9.True or false: a drinking straw works by air pressure. (a) False (b) True
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a stiff postcard (d) a towel
11. 11.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
13. 13.True or false: a fridge magnet works by air pressure. (a) False (b) True
14. 14.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
15. 15.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a drinking straw (d) a bicycle pump
16. 16.True or false: a medicine dropper works by magnetism. (a) True (b) False
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a towel (d) a glass of water
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a balloon (c) a glass of water (d) turmeric powder
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) yeast (d) a towel
20. 20.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a suction hook
21. 21.True or false: a suction hook works by air pressure. (a) False (b) True
22. 22.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
25. 25.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) juice likes plastic (d) the straw is magnetic
26. 26.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) the card gets wet (d) little air left inside
27. 27.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) a magnet (d) glue on the card
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) the way we turn it (c) whether the card stays (d) how full the glass is
29. 29.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a magnetic chess set (d) a vacuum cleaner
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) True (b) False
32. 32.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a battery cell
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) the same card (c) whether the card stays
35. 35.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a magnetic chess set (d) a medicine dropper
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) True (b) False
37. 37.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
39. 39.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure

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